Studies on Cobalt(II) and Copper(II) Schiff Base Complexes

Abstract

Co(II) and Cu(II) Schiff base complexes derived from salicylaldehyde and anthranilic acid (L) have been prepared and characterized by using elemental analysis, thermogravimetric analysis, magnetic analysis, infrared and electronic spectra. The theoretical elemental analysis data of the prepared Schiff base and its complexes are in a good agreement with those found data and show the formation of 1:1 [M:L] ratio. Thermogravimetric analysis reveals the presence of hydrated and coordinated water molecules. The magnetic moment values show the existence of three unpaired electrons for Co(II) complex and one unpaired electron for Cu(II) complex. The infrared spectral data display the coordination sites of the Schiff base towards the Co(II) and Cu(II) ions. The electronic absorption spectra exhibit π→π* (phenyl ring) and n→π* (HC=N) transitions and the expected geometrical structures of the prepared complexes.